518 PROCEEDINGS OF THE NATIONAL MUSEUM VOL.84 



ampullae are unevenly distributed on all surfaces; not crowded. 

 Diameter of ampullar chamber 0.6 mm to 0.9 mm. Male unknown. 



The surface of the coenosteum is minutely porous and has a granu- 

 lated appearance due to tiny vermiculations or interrupted irregular 

 ridges, the surface of which is closely beset with microscopic crystal- 

 Uke spicules, similar to those of trachystoma. There are rather 

 numerous scattered, tiny dactylopores. 



Color bufif pink, becoming pale pink after cleaning with sodium 

 hypochlorite. 



Type.— U. S.N. M. no. 43264. 



Type locality.— St&tion 4777, Petrel Bank, Bering Sea, lat. 52° li' 

 N., long. 179° 49' E., 52 to 43 fathoms, fme gravel; 2 spechnens. 



Remarks. — A. brochi is not especially lilve solida except in having a 

 narrow gastropore and constricted gastrostome. This feature is found 

 also in trachystoma which is believed to be nearly related to A. campy- 

 leca. If the position of the ampullae is really significant, A. brochi 

 is quite definitely unlike solida. The growth habit of the two species 

 is different, solida having coarse, subterete, anastomosing branches 

 composing probably a very massive colony. 



This species is named m honor of Dr. Hjalmar Broch, of Oslo, 

 Norway. 



ALLOPOR.4 STEJNEGEBI, new speciea 



Plate 42, Figures 2-2h; Plate 56 



Diagnosis. — Colony lobed, rather than branched; cyclosystems not 

 protuberant, fairly evenly spaced on all surfaces, with usually 6 to 8 

 narrow, clean-cut dactylotomes, a narrow, cylindrical m.oderately 

 deep gastropore, and relatively small gastrostyle; ampullae low- 

 convex, ridged or rugose superficially. Differing from A. solida in the 

 more prominent ampullae, deeper dactylotomes, and relatively smaller 

 gastrostyle, as well as in the form of colony and its rougher surface. 



Description. — Type colony with short, thick, irregular branches (pi. 

 56, fig. 2); greatest width 70 mm; height 40 to 60 mm, according to 

 angle of measurement. 



The cyclosystems have long, narrow, sharply cut dactylotomes, 

 5 to 12, ordinarily 6 to 8, in number, the width being uniform, not 

 constricted adjacent to gastropore as in verrilli. The dactylostyles are 

 so small as to be rudimentary, whereas in verrilli they are well de- 

 veloped. The dactylotomes are shallower than in verrilli, where 

 they cut deep on the sides of gastropore. The gastropore is usually 

 slightly curved on the distal parts of the colony. Gastrostyle rather 

 small, loosely put together (pi. 42, fig. 2b); no well-differentiated 

 style chamber. Diameter of large cyclosystem 1.2 mm; depth of 

 gastropore 1.5 mm. 



